<?php
header ( 'content-type:text/html; charset=utf-8' );
session_start ();
if (isset ( $_SESSION ['user'] )) {
	print_r ( "<h3>通讯录界面</h3>" );
	print_r ( "<a href='logout.php'>退出</a>" );
} else {
	header ( 'Refresh:2;url=/t4.php' );
	die ( '<h3>请先登录</h3><a>返回重新登录</a>' );
}
?>